Research article

Optimal clustering by merge-based branch-and-bound


  • Received: 18 March 2022 Accepted: 22 March 2022 Published: 31 March 2022
  • We present a method to construct optimal clustering via a sequence of merge steps. We formulate the merge-based clustering as a minimum redundancy search tree, and then search the optimal clustering by a branch-and-bound technique. Optimal clustering is found regardless of the objective function used. We also consider two suboptimal polynomial time variants based on the proposed branch-and-bound technique. However, all variants are slow and has merely theoretical interest. We discuss the reasons for the results.

    Citation: Pasi Fränti, Olli Virmajoki. Optimal clustering by merge-based branch-and-bound[J]. Applied Computing and Intelligence, 2022, 2(1): 63-82. doi: 10.3934/aci.2022004

    Related Papers:

  • We present a method to construct optimal clustering via a sequence of merge steps. We formulate the merge-based clustering as a minimum redundancy search tree, and then search the optimal clustering by a branch-and-bound technique. Optimal clustering is found regardless of the objective function used. We also consider two suboptimal polynomial time variants based on the proposed branch-and-bound technique. However, all variants are slow and has merely theoretical interest. We discuss the reasons for the results.



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